Gillian Anderson is blaming the popularity of new Batman movie The Dark Knight for the X-Files film’s low box office grossings.

The X-Files: I Want To Believe, starring Anderson and David Duchovny, earned a disappointing $10.2 million in its opening weekend in the U.S., while The Dark Knight took an impressive $75 million in the same weekend.

And Anderson is convinced that her movie – based on the hit TV show – is suffering because so many people are flocking to see the Batman sequel.

She says, “It’s (The X-Files film) had a bit of a rough time in the States. It’s opening against one of the highest grossing movies, Batman. People in the States are so used to lots of CGI, action and sex and we don’t really off a lot of that in this film.”